Locomotive-fire-box construction.



LE GRAND PARISH. I LOCOMOTIVE FIRE BOX CONSTRUCTION. APPLICATION FILIED M'AY15.1914.

1 156,368. Patented Oct. 12, 1915.

Wdmewe LE GRAND PARISH, J? NET? $03K, N. Y.

To all whom it may concern Be it known that 1, LE (Eh-mun PARISH, a citizen of the United States, residing at New York citv.'in the county of New York and of NeWYork, have invented certain new and useful Improvements in Locomoptive Fire-Box Construction, of which the following is a'specification.

..Tl 'l1S invention relates to locomotive fireincrease in efficiency. In conjunction with the foregoing, invention also contemplates the provision of an economical and efficientfire-boi; construction whereby increased circulation between the water spaces is obtained and at the same time the. circulation tubes'receive the beneficial protective action-of the bricks constituting the retrace toryarch where the .fire is hottest. By this invention -I obtain greater ei'liciency effects and better gas mixing results than by previous methods without the use of any mor bricks or brick material than in previous arches.

The foregoii'ig, together with such other 0b]ects as may hereinafter appear or are incident to my invention. l attain by means of a construction, the preferred embodiment of which I have illustrated'in the accompanying. drawings, wherein Figure 1 is a longitudinal section through a locomotive fire-box of standard construe tion showing my invention applied thereto; Fig.2 is a transverse section through the refractory arch taken on the line H-Il of Fig. 1 but drawn on a larger scale; Figs. 3, 4- and 5 are similar sections through modified types of the improvementl 7 Referring to the general construction of the fire-box, the inner fire-box comprises the tube sheet 1, the side sheet 2. the back sheet 3, and the crown sheet 4:. The outside firebox comprises a throat sheet 1, the outer side sheets 2 (not shown), the back sheet 3 and the tube or cover sheet 4 The water legs or spaces are closed by the usual mud ring 5; the back sheets 3 and 3 are coniiected by the stay-bolts 6; and the crown sheet. and cover sheet are connected by the radial stay bolts 7. At the forward end of the fire-boa; the tube sheet 1 is carried up- Specification of Letters Patent.

LDCGMGTIVTr-FIRE-BQIZ CQEPTSTRUCTEGN.

remotes ore. is, leis.

application filed may 15, 1*.)14. Serial No. 838.654.

ward to provide the usual flue sheet 13 in which the endsof the lines 12 are expanded.

in order to carry out mv invention, I depart from the usual practice and provide a pluralitv of arch-supporting members which preferablv are circulation tubes extending rearwardly and upwardlvufrom the from water space tothe rear water-spacepsaid tubes being preferably arranged in two rows 8 and 85, the one above the other, although the may be arranged differently and still serre'the purposes of my invention. In the construction of Figs. 1 and 2, the refractory arch comprises a plurality of rows of bricks arranged on the tubes in approximately a staggered relation. In placing the bricks I' prefer to-arrange the openings in staggered relation; that is, so that thelupper bricks come over openings below so as to get as much deflection of the flame as possible. The bricks of the central row 9 are socketed or otherwise supported on the central tubes of the lower row 8*; the proximate rows of bricks 10 and ll are supported at their inner ends on the corresponding central tubes of the upper row 8, and at their outer ends on the outermost tubes of the upper row 8; ano the rows of tubes 1%- and 15 which comprise the side walls of the arch are supported at their inner ends on the outermost tubes of the lower row 8 and incline upwardly, their outer ends bearing against the side sheets 2.

The construction. shown in Fig. 8, in eltect, constitutes a reversal of the construction of Fig. 2, the central row of bricks 9 being supported on the central tubes of the upper row, the rows of bricks 10 and 11 being supported on the tubes of the lower row. and the end or side rows of bricks 14 and 15 being supported on the outermost tubes of the upper row and bearing against the side sheets in the manner already described.

In Fig. 4 I have shown a construction in which the rows of bricks 9, 10, and 11, which constitute thev central portion of the arch, are supported at one end on the lower row of tubes and at the other end on the upper row of tubes. In this construction, however, the row of bricks 14- are supported at one end on a side tube of the lower row and bear at the otherend against the side sheet, whilebricks tral tubes of the lower row 8, and the bricks of the rows 14 and 15 are socketed and supported in the same manner as the corresponding bricks in the construction of Fig. 4. The bricks of the rows 10 and 11, how ever, are disposed at an angle, being supported at one end on the central tubes of the upper row of tubes 8 and at the opposite ends on the outer tubes of the lower row of tubes 8. j

It will be seen from the foregoing that in each type of refractory arch shown, the

the tubes in such manner as to present an interrupted surface to the gases and products of combustion, with circulation spaces or intervals between the bricks, which .defiects the gases in diiferentdirections and secures an-intimate admixture thereof, all of which results in a more complete combustion of the gases, which of course in creases the efliciency of the fire-box. It

\ will be noted that in conjunction with this advantage, I also obtain an increased circulation between the water walls by virtue of the provision of the additional circulation tubes which are provided in order to obtain the improved arrangement of the arch bricks which I have described, At the same time it will be observed that all of the tubes are protected by the bricks of the arch. The

life of the tubes is thus, prolonged. It will be apparent that, while the gases are defiected and thoroughly inter mixed, their course of travel is s'ufliciently altered to obtain more complete combustion and better ignition, which is one of the principal ob jects of this invention.

Y Iclaim:

or rows of bricks are supported on from a point adjacent the front water wall of the fire boxrearwardly a portion of the distance to the rear water wall, said-arch comprising a. plurality of removable refractory arch bricks arranged in rows, the wing rows of bricks being supported on the end members of the rows of circulation tubes and on the side sheets, and the central rows of bricks being supported on circulation tubes extending in different planes so as to the bricks are subjected to the cooling action of the tubes and the gases of combustion are thoroughly mixed, 'whilethe ends of the fines are protected- 2. In combinatioma locomotive fire box having water walls and a fiue sheet, a plurality of fiues extending through the flue sheet and forwardly thereof, two rows of circulation tubes connecting the front and rear water walls of the fire box and extending rearwardly and upwardly from the front wall at a point beneath-the flues, the tubes of one row being located substantially vertically above the tubes of the other raw and the two rows being spaced apart to permit the introduction of arch bricks therebetween, and an arch supportedon the circulation tubes extending from'a point adjacent the front water wall of the fire box rearwardly a portion of the distance to the rear water wall to protect the ends of the fines, said arch comprising'a plurality of removable refractory arch bricks arranged in rows, the wing ported on one of the end members of the rows of. circulation tubes and on the'side sheet, and the central rows of bricks being arranged oil-circulation tubes extending in difierentplanes so as to provide lateral gaps between the rows, whereby the bricksare subjected to the cooling action of the tubes and the gases of combustion are thoroughly mixed.

In testimony whereof I have hereunto signed my name in the subscribed witnesses.

LE GH-AND PARISH,

'Witnesses:

PAUL SYNNESTVEDT, HARVEY L. Lno'H-NER,

presence of the two.

provide spaces between the rows, whereby, a

rows of bricks being sup'-' 

